X-Git-Url: http://review.tizen.org/git/?a=blobdiff_plain;f=include%2Frtc.h;h=1efc0db3de60c1fe3d20ba662832a3e1398f1bd5;hb=92832045c54586e9dffa082ff8cd8c2ef6040757;hp=69fe8d4db05316703ad6e48fa36843185e099f45;hpb=c9feb427aba860ebc79f9851a1bb49cc456a2d48;p=platform%2Fkernel%2Fu-boot.git

diff --git a/include/rtc.h b/include/rtc.h
index 69fe8d4..1efc0db 100644
--- a/include/rtc.h
+++ b/include/rtc.h
@@ -1,8 +1,7 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
 /*
  * (C) Copyright 2001
  * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
- *
- * SPDX-License-Identifier:	GPL-2.0+
  */
 
 /*
@@ -19,6 +18,8 @@
 
 #ifdef CONFIG_DM_RTC
 
+struct udevice;
+
 struct rtc_ops {
 	/**
 	 * get() - get the current time
@@ -55,6 +56,30 @@ struct rtc_ops {
 	int (*reset)(struct udevice *dev);
 
 	/**
+	 * read() - Read multiple 8-bit registers
+	 *
+	 * @dev:	Device to read from
+	 * @reg:	First register to read
+	 * @buf:	Output buffer
+	 * @len:	Number of registers to read
+	 * @return 0 if OK, -ve on error
+	 */
+	int (*read)(struct udevice *dev, unsigned int reg,
+		    u8 *buf, unsigned int len);
+
+	/**
+	 * write() - Write multiple 8-bit registers
+	 *
+	 * @dev:	Device to write to
+	 * @reg:	First register to write
+	 * @buf:	Input buffer
+	 * @len:	Number of registers to write
+	 * @return 0 if OK, -ve on error
+	 */
+	int (*write)(struct udevice *dev, unsigned int reg,
+		     const u8 *buf, unsigned int len);
+
+	/**
 	 * read8() - Read an 8-bit register
 	 *
 	 * @dev:	Device to read from
@@ -87,7 +112,7 @@ struct rtc_ops {
 int dm_rtc_get(struct udevice *dev, struct rtc_time *time);
 
 /**
- * dm_rtc_put() - Write a time to an RTC
+ * dm_rtc_set() - Write a time to an RTC
  *
  * @dev:	Device to read from
  * @time:	Time to write into the RTC
@@ -109,6 +134,29 @@ int dm_rtc_set(struct udevice *dev, struct rtc_time *time);
 int dm_rtc_reset(struct udevice *dev);
 
 /**
+ * dm_rtc_read() - Read multiple 8-bit registers
+ *
+ * @dev:	Device to read from
+ * @reg:	First register to read
+ * @buf:	Output buffer
+ * @len:	Number of registers to read
+ * @return 0 if OK, -ve on error
+ */
+int dm_rtc_read(struct udevice *dev, unsigned int reg, u8 *buf, unsigned int len);
+
+/**
+ * dm_rtc_write() - Write multiple 8-bit registers
+ *
+ * @dev:	Device to write to
+ * @reg:	First register to write
+ * @buf:	Input buffer
+ * @len:	Number of registers to write
+ * @return 0 if OK, -ve on error
+ */
+int dm_rtc_write(struct udevice *dev, unsigned int reg,
+		 const u8 *buf, unsigned int len);
+
+/**
  * rtc_read8() - Read an 8-bit register
  *
  * @dev:	Device to read from
@@ -128,6 +176,26 @@ int rtc_read8(struct udevice *dev, unsigned int reg);
 int rtc_write8(struct udevice *dev, unsigned int reg, int val);
 
 /**
+ * rtc_read16() - Read a 16-bit value from the RTC
+ *
+ * @dev:	Device to read from
+ * @reg:	Offset to start reading from
+ * @valuep:	Place to put the value that is read
+ * @return 0 if OK, -ve on error
+ */
+int rtc_read16(struct udevice *dev, unsigned int reg, u16 *valuep);
+
+/**
+ * rtc_write16() - Write a 16-bit value to the RTC
+ *
+ * @dev:	Device to write to
+ * @reg:	Register to start writing to
+ * @value:	Value to write
+ * @return 0 if OK, -ve on error
+ */
+int rtc_write16(struct udevice *dev, unsigned int reg, u16 value);
+
+/**
  * rtc_read32() - Read a 32-bit value from the RTC
  *
  * @dev:	Device to read from
@@ -147,11 +215,17 @@ int rtc_read32(struct udevice *dev, unsigned int reg, u32 *valuep);
  */
 int rtc_write32(struct udevice *dev, unsigned int reg, u32 value);
 
+#ifdef CONFIG_RTC_ENABLE_32KHZ_OUTPUT
+int rtc_enable_32khz_output(int busnum, int chip_addr);
+#endif
+
 #else
 int rtc_get (struct rtc_time *);
 int rtc_set (struct rtc_time *);
 void rtc_reset (void);
+#ifdef CONFIG_RTC_ENABLE_32KHZ_OUTPUT
 void rtc_enable_32khz_output(void);
+#endif
 
 /**
  * rtc_read8() - Read an 8-bit register
@@ -189,7 +263,18 @@ void rtc_write32(int reg, u32 value);
  * rtc_init() - Set up the real time clock ready for use
  */
 void rtc_init(void);
-#endif
+#endif /* CONFIG_DM_RTC */
+
+/**
+ * is_leap_year - Check if year is a leap year
+ *
+ * @year	Year
+ * @return	1 if leap year
+ */
+static inline bool is_leap_year(unsigned int year)
+{
+	return (!(year % 4) && (year % 100)) || !(year % 400);
+}
 
 /**
  * rtc_calc_weekday() - Work out the weekday from a time
@@ -212,9 +297,8 @@ int rtc_calc_weekday(struct rtc_time *time);
  *
  * @time_t:	Number of seconds since 1970-01-01 00:00:00
  * @time:	Place to put the broken-out time
- * @return 0 if OK, -EINVAL if the weekday could not be determined
  */
-int rtc_to_tm(int time_t, struct rtc_time *time);
+void rtc_to_tm(u64 time_t, struct rtc_time *time);
 
 /**
  * rtc_mktime() - Convert a broken-out time into a time_t value
@@ -229,4 +313,12 @@ int rtc_to_tm(int time_t, struct rtc_time *time);
  */
 unsigned long rtc_mktime(const struct rtc_time *time);
 
+/**
+ * rtc_month_days() - The number of days in the month
+ *
+ * @month:	month (January = 0)
+ * @year:	year (4 digits)
+ */
+int rtc_month_days(unsigned int month, unsigned int year);
+
 #endif	/* _RTC_H_ */